I've never been flipped off driving an MV. in fact quite the office you'll see a lot of thumbs up.
The only time I've ever had anyone give me an attitude while driving green iron was,
One time back when I had I bobbed deuce on 1400s. I was at the laundry mat. To hippie college girls walked by and saw the truck. They walked in the laundry mat and demanded to know, "who's truck is that"? it was only me and one other guy in the place and He had a car.
So I calmly asked"which truck?"
and she said "The big one".
I said "oh that? That's mine."
she said "me and my friend were wondering who needs to drive a truck that big to do laundry!"
to which I responded, " I do, this guy right here."
Then she asked me if there was something wrong with me. I said " oh yeah there's a lot of things wrong with me. as a matter of fact there are so many things going on inside my head that if you and your friend knew about you would not sleep at night.
she quickly changed her tone, made a couple of little small chat comments, and promptly left.